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Datums for 9414863, Richmond CA


Elevations on Station Datum

Station: 9414863, Richmond, CA
Status: Accepted (Nov 10 2011)
Units: Feet
T.M.: 0
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW17.63Mean Higher-High Water
MHW17.02Mean High Water
MTL14.85Mean Tide Level
MSL14.83Mean Sea Level
DTL14.60Mean Diurnal Tide Level
MLW12.69Mean Low Water
MLLW11.57Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT6.06Great Diurnal Range
MN4.32Mean Range of Tide
DHQ0.61Mean Diurnal High Water Inequality
DLQ1.12Mean Diurnal Low Water Inequality
HWI7.95Greenwich High Water Interval (in hours)
LWI1.48Greenwich Low Water Interval (in hours)
Maximum20.22Highest Observed Water Level
Max Date & Time02/06/1998 15:54Highest Observed Water Level Date and Time
Minimum9.06Lowest Observed Water Level
Min Date & Time01/11/2009 01:48Lowest Observed Water Level Date and Time
HAT19.16Highest Astronomical Tide
HAT Date & Time12/31/1986 19:00HAT Date and Time
LAT9.45Lowest Astronomical Tide
LAT Date & Time05/25/1990 14:24LAT Date and Time
Tidal Datum Analysis Periods
10/01/1995 - 09/30/2005
10/01/2006 - 09/30/2011
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 9414863 Richmond, CA

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services